72 BRITISH HIERACIA. 



corymb and jf)e^K»c^iss straight, erect or ascending; usually leaf- 

 less, but occasionally with minute leaves ; rather floccose, nearly 

 or quite destitute of setse. Heads not numerous. Involucres 

 with few scattered brittle white hairs and a little stellate down 

 near the base. Phyllaries green : inner ones rather broad, with 

 pale margins. Florets bright yellow; glabrous, or sometimes 

 obscurely pilose at the tips when in bud. 8ti/les livid or nearly 

 yellow, clothed with minute dai'k hairs. Pajpjms rufescent. 



Nearly allied to M. prenamthoides, but differing from that species 

 in being more glaucous and less hairy ; also ia having less clasping 

 leaves (never auricled at the base), longer straight peduncles usually 

 without setse, a simple or slightly branched corymb, rather larger 

 heads, sub-glabrous involucres, and florets nearly or quite destitute 

 of cilia. 



Extreme forms of H. strictum sometimes also resemble forms of 

 H. rigidmm, but differ in having thinner leaves, a less rigid stem, 

 and in never forming the large dense compound corymbose panicle 

 which marks that species. 



* * Florets glabrous at the tips. 



29. H. UKBELLATDIS. Without root-leaves. Stem rigid, 

 leafy, corymbose, or svib-umlellate. Leames linear, or oblong- 

 lanceolate, acute, denticulate, dentate or nearly entire, 

 sessile, narrowed or rounded at the base. Peduncles slender, 

 without hairs or setse. Mvolueres dark green, sub-truncate 

 or turbinate at the base ; gmrous, or with few brittle white 

 hairs. Phyllaries broad, obtuse, with recurved points : outer- 

 most acute. Florets glabrous. Styles yellow. 



H. umbellatum. Linn. Sp. PI. vol. ii. p.' 1131. Pries, Symb. 

 p. 177. Gren. & Godr. p. 387. Bab. Man. Ed. 3, p. 199. Hook, 

 •and Am. Ed. 7, p. 226. Koch, Syn. p. 530. E. B. t. 1771. 



H. frutieosum angustijblium majm. Eay's Syn. Ed. 3, p. 168. 



